I don't understand how wp plugin handle html form. Say, I develop a wp plugin that has a setting page which uses HTML form to handle input.
<FORM action="" method="post">
What to put in the action parameter? Should it be blank or the filename of the plugin php file?
I saw some sample code. They put in "options.php". It made me even more puzzled because I have no idea where is that options.php file.
Please help me understand.
Thanks a lot!